单选题 ______ and the lesson began.
   A) In came the teacher                 B) Came in the teacher
   C) Came the teacher in                 D) In came she
【正确答案】 A
【答案解析】表示位移的副词in位于句首，句子完全倒装，把came放在主语the teacher之前，但主语是人称代词不需倒装。